Lamp



C. E. GODLEY LAMP Filed May 5, 1922 Patented Dec. 30, 1924.

UNITED stares CHARLES E. GODLEY, OF DETROIT, MICHIGAN, ASSIGNOR TO EDMUNDS AND JONES PATENT oF lcE.

CORPORATION, OF DETROIT, MICHIGAN, A CORPORATION OF NEW YORK.

LAMP.

Application filed May a, 1922. Serial No. 558,075.

To all whom it may concevm:

Be it known that I, CHARLES E. GODLEY, a citizen of the United States, and residing at Detroit, in the county of Wayne and State of Michigan, have invented a new and Improved Lamp, of which the follow ing is a specification.

This invention relates to the construction of the bodies, reflectors and door or lens rings of lamps of the type generally used on automobiles and its object is to provide a simple, strong and efi'ect'ive connector between the body of the lamp and the lens ring by means of which the lens ring and the reflector will be held in proper position on the body.

In the accompanying drawing, Fig. 1 is av front elevation of a lamp with the lens ring and lens removed. Fig. 2 is a side elevation on a larger scale of a small portion of the body and the reflector showing a bayonet slot for securing the lens ring in position. Fig. 3 is a transverse section on the line 33 of Fig. 1 on a larger scale. Fig. 1 is a rear elevation of a portion of the lens ring. Fig. 5 is an inside elevation of a section of the lens ring. Fig. 6 is a section on the line 66 of Fig. 5. Fig. 7 is a side elevation of a lamp embodying this invention.

Similar reference characters refer to like parts throughout the several views.

The lamp shown in Fig. 7 has a substantially cylindrical body 1 provided with circumferential beads or ribs 2 and a back 3 in which the connector plug 4 may be mounted, although the particular shape of the body is generally immaterial. The body is formed with a cylindrical end 5 in which are a series of bayonet slots 6 such as shown in Fig. 2, these slots having enlarged inner ends 7 and having their outer walls 8 inclined so as to constitute wedges to force the lens ring into position. The outer edge of this body is turned inward as shown in Figs. 3 and 6 to constitute a flange 9 which is slitted at intervals so that the tongues 10 may be struck up therefrom.

The reflector is of well known construction having a generally parabolic main portion 13, a radial flange it properly grooved to receive the packing ring 15, a cylindrical portion 16 and a second radial flange 17 adapted to lie flat against the radial flange 9 of the body. As shown in Fig. 1, this flange 17 is provided with a notch 18 for each tongue 10 and this permits the flange 17 of the reflector to be placed against the flange 9 of the body with the tongues 10 projecting through the notches 18 in-the reflector flange. The reflector may now be turned clockwise in Fig. 1 until portions of the flange 17 slip under the tongues 10,

as there shown. See also Fig. 3.

The lens r ng has a cylindrical portion 20 at .whose inner edge is a radial flange 21 adapted to center this lens ring on the end 5 of the body. The outer portion of the lens ring is rounded inwardly and then turned back to constitute a flange 23 that bears against the lens 2 1. Secured to the cylindrical portion 20 of the lens ring are.

a series of plates 25, one for each bayonet slot 6, these plates fitting against the inner surface of the lens ring up to the point 26, from which point a narrow tongue 27 extends rearwardly so as to contact with the edge of the lens 24, a lip 28 on each of these tongues 27 being turned radially so as to press the lens against the edge of the flange 23 of the lens ring.

The ends 29 of these plates are formed with substantially semi-cylindrical portions 30 in which the ends 31 of the locking springs 32 are mounted. These springs lie close against thepla'tes 25 except at their central portions where the springs are formedwith ears 33 which extend away from the cylindrical portions '20 of the lens ring.

As shown in Fig. 1, the radial flange 9,

with the ears 33 extending inwardly into the outer ends of the bayonet slots 6, this lens ring can be turned clockwise in Fig. 1 to cause these ears 33 to slide along inclined walls 8 until they reach the notches 7 at the inner ends of these bayonet slots 6-.

This movement of the ears 33 along these inclined walls 8 serves to tension the springs 32 and to draw the lens ring onto the end of the lamp, body, and this results in a considerable pressure between the lens 25 and the packing ring 15, which not only holds the lens securely between this packing ring and the inturned flange 23, but holds the flange 17 on the reflector firmly against the flange 9 of the lamp body. These springs 32 therefore press the lens, lens ring and the reflector against the lamp body. The enlargements 7 at the inner end of the bayonet slots 6 prevent the ears 33 from moving out of proper locking positions and considerable force is necessary to turn the lens ring after it has once reached locking position. The enes 37 of the springs are at right angles to those portions which are Within the sockets 30 and transmit the bending stresses of the springs 32 to these ends 29 of the plates 25.

In order to hold the, ears 33 of the springs 32 in proper position so that they will al ways slip under the shoulders 36 at the ends of the walls 8 of the slots 6, I prefer to form tongues 38 on the plates 35 to extend over the springs at tl e ears 33 which tongues prevent these springs being bent when the lens ring is pressed against the body. The pressure on these ears by the walls 8 is always toward the flange 21. on the lens ring 20.

The details of this construction and the proportions of the parts may all be changed without departing from the spirit of my invention as set forth in the following claims,

I claim 1. In a lamp, the combination of a lamp body'liaving a cylindrical end, a lens ring rotatable on said end, said end having a series of bayonet slots provided with in clined walls, and a series of springs attached at their ends to the inner side of the lens ring and having inwardly extending. ears formed between their ends and adapted to I enter the slots in the body to engage the walls of the slots and resiliently press the lens ring toward the body when said ring is rotated on the body in one direction.

2. In a lamp, the combination of a lamp body having'a cylindrical end formed with a series of inclined bayonet slots, a lens ring rotatable on the said end, a lens in said ring, a series of plates attached to the inside of said lens ring and having tongues adapted to engage the lens to secure it in position, and a series of circumferential springs having their ends attached to said plates and having inwardly extending ears adapted to engage in said slots and draw the lens ring and body toward each other when said ring is rotated on the body in one direction.

3. In a lamp, the combination of a lamp body having a cylindrical end formed with a series of inclined bayonet slots, a lens ring rotatable on the said end, a lens in said ring, series of plates attached to the inside of said lens ring and having tongues adapted to, engage the lens to secure it in position, a series of circumferential springs having. their ends attached to said plates and having inwardly extending ears adapted to engage in said SlQts and draw the lens ring ring and body toward each other when said ring is rotated on the body in one direction, and a tongue struck up from each plate and extendingv over the ear on the adjacent spring to hold the ear in proper position to enter the slots.

4. In a lamp, the combination of a lamp body having a cylindrical end, a lens ring rotatably mounted on said end, one of said members having a series of bayonet slots provided with inclined outer walls, and a series of springs attached at their ends to the other member and having ears formed between their ends and adapted to enter the said bayonet slots to engage the inclined walls thereof to resiliently press the lens ring toward the body when said ring is rotated on the body in one direction.

CHARLES E. GODLEY. 

